以下是引用lz3456在2006-7-24 22:14:00的发言：

除了惠普以外的那款 (Texas Instruments BA II Plus) 只要３０ 多刀。请问有没有姐妹们用过，跟惠普的那个比如何。谢谢。

1. you HAVE TO purchase one of the two models; otherwise you can't enter the test center

2. I like my TI BA II Plus. I've never used HP, so no comparison...but TI is inexpensive and easy to use. You need two with one as back up.